From 6f4a73645c4f0cff051ddfd87950369b510fd3ae Mon Sep 17 00:00:00 2001 From: Tony Lin Date: Wed, 31 Aug 2011 13:28:37 +0800 Subject: [PATCH] ENGR00155612-3 [mx6q]add delay after cmd6 for eMMC compatibility sandisk eMMC4.4 cards need a 1ms delay after cmd6 (switch cmd) which is confirm by sandisk errata. add 1ms delay after cmd6 to provide more robustness and compatiblity of our driver supporting eMMC4.4 cards. Signed-off-by: Tony Lin --- drivers/mmc/core/mmc_ops.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 845ce7c533b9..b11876c2c2df 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -397,6 +397,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) return err; + mdelay(1); /* Must check status to be sure of no errors */ do { -- 2.39.5